standard Gibbs energy of activation, \(\Delta ^{\ddagger}G^{\,\unicode{x26ac}}\), \(\Delta ^{\ddagger}G\)

https://doi.org/10.1351/goldbook.S05916
Standard Gibbs energy change associated with the activation reaction
See: activation reaction, standard reaction quantities
Source:
Green Book, 2nd ed., p. 57 (https://dev.goldbook.iupac.org/files/pdf/green_book_2ed.pdf)